We recently launched Lumo, a privacy-friendly ChatGPT alternative, by the makers of Proton Mail & Proton VPN.

Proton VPN enables millions of people to connect securely and privately, even in places where the internet is restricted or unreliable. Delivering that experience means our service must perform flawlessly under highly variable, real-world conditions.

Provable is on a mission to make zero-knowledge proof technology accessible to the masses. Most demand for proof generation today exists in the web3 world. Help us expand by making this frontier technology easy to use, reducing fraud in all markets through improved verifiability. We're a Series B company and have raised $228M in funding (Softbank, Kora, a16z). Our engineering team consists of 14 high-agency product-oriented engineers.

Prove AI is an AI management platform that helps organizations centralize and manage their AI models while maintaining strict oversight of data access and usage. Built on distributed ledger technology, Prove AI provides tamper-proof oversight, ensuring organizations can set and enforce guardrails to mitigate risk and optimize AI performance.

Proven is a start-up software company delivering a modern electronic medical record (EMR) to physical therapists. Proven’s Founders and Executive team have decades of experience successfully growing and scaling companies in healthcare. Our mission is to deliver an innovative and impactful solution to healthcare providers leveraging modern technology.

Psiphon is a VPN app used by millions of people to access the open internet in regions where it's restricted. Small team, software that matters. We're building the next-gen client app in Flutter (iOS, Android, macOS, Windows) and need someone who can work across both iOS native and Flutter. Split is roughly 65% Flutter, 35% iOS native (Swift, StoreKit, entitlements, network extensions). You'll have mentorship from a senior iOS specialist for the deeper networking work. Day to day: Feature development in Flutter, iOS platform integration (subscriptions, permissions, App Store), and occasionally going deep into network extensions and packet tunnel providers. Small team (~3-4 core devs), high ownership, low ceremony. Looking for: Strong Swift experience beyond just UIKit/SwiftUI app dev, comfort with the iOS ecosystem (App Store process, provisioning, StoreKit), and willingness to context-switch between Swift and Dart in the same day. Flutter experience is a strong plus but not required if you pick up frameworks quickly. Contact: jobs@psiphon.ca

Pulumi simplifies managing cloud infrastructure. Pulumi's Infrastructure as Code (IaC) platform enables developers and infrastructure teams to define, deploy, and manage cloud resources using familiar programming languages like Python, TypeScript, Go, .NET, Java, and YAML.

Puma.tech is focused on making LLMs easy to use on your mobile phone. Private by design. The company values Optimism, Kindness, Curiosity, Speed, and Grit. They are capital efficient with 3+ years of runway and have raised Angel and Pre-Seed Rounds from notable investors in crypto and AI.

We’re a small, technical founding team based in SF building an assistant for tradespeople — electricians, plumbers, contractors. Our app turns job site voice notes and photos into structured job records, quotes and invoices. We’re seed-funded, ship fast, and spend a lot of time with users in the field, building practical AI that saves people real hours every week.

We save companies money on their cloud spend (AWS and GCP), and are building additional services around security and cost visibility. We are profitable and growing extremely quickly ($1m to $10m ARR last year, 500+ customers) and are growing our team to match.